X-ray diffraction of photonic colloidal single crystals
| Abstract | We have resolved a great number of Bragg peaks of photonic colloidal single crystals by synchrotron small angle X-ray scattering (SAXS). We find that charge-stabilized colloids form face-centered cubic crystals at all densities up to ∼60 vol %. The colloidal particles are highly ordered on their lattice sites, which confirms that these self-organizing materials are suitable building blocks for optical photonic matter. The experiments demonstrate that synchrotron SAXS with two-dimensional detection is a powerful tool to study systems with length scales comparable to optical wavelengths. |
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| Authors | W. L. Vos, M. Megens, C. M. van Kats, and P. Bösecke |
| Year of publication | 1997 |
| Date published | 10/1997 |
| Journal | Langmuir |
| Volume | 13 |
| Pages | 6004-6008 |
| Keywords | 3D photonic crystals, colloidal suspensions, stop bands, x-rayscattering |